- #1

pallab

- 34

- 3

what are Dirac's gamma matrices
. especially ,
does it have many forms?

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- Thread starter pallab
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- #1

pallab

- 34

- 3

what are Dirac's gamma matrices
. especially ,
does it have many forms?

- #2

- 17,812

- 19,028

- #3

- 1,567

- 591

what are Dirac's gamma matrices. especially ,does it have many forms?

There are some different ways to define them. The Dirac equation, in which a matrix with differential operators as its entries is acting on the spinor field, looks a bit different depending on the representation (assuming you write it explicitly in matrix-spinor form).

- #4

Michael Price

- 344

- 90

Good link. Of the choices, I find the Weyl or chiral basis the best one to use..

- #5

PeterDonis

Mentor

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Of the choices, I find the Weyl or chiral basis the best one to use..

Generally speaking, the Weyl basis (in which ##\gamma^5## is diagonal) is most useful for studying relativistic particles, such as in high energy physics experiments, while the Dirac basis (in which ##\gamma^0## is diagonal) is most useful for studying non-relativistic particles. (Here "relativistic" and "non-relativistic" is relative to the lab frame in which the measuring equipment is assumed to be at rest.)

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